#A63A30#A63A30

#A63A30 is a mid, vivid red. Relative luminance 0.113; OKLCH L 50.1% C 0.144 H 28.6°. Best body text is #FFFFFF at 6.42:1 contrast (WCAG AA passes).

Color values

HEX	#A63A30
RGB	rgb(166, 58, 48)
HSL	hsl(5, 55%, 42%)
HSV	hsv(5, 71%, 65%)
CMYK	cmyk(0%, 65.1%, 71.1%, 34.9%)
CIE-LAB	lab(40.16, 43.85, 30.07)
CIE-LCH	lch(40.16, 53.17, 34.44°)
OKLab	oklab(50.09% 0.1268 0.069)
OKLCH	oklch(50.09% 0.144 28.6)
XYZ	xyz(17.7743, 11.3490, 4.0504)
Luminance	0.1135 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63A30 #309CA6

analogous

#A63061 #A63A30 #A67530

triadic

#A63A30 #30A63A #3A30A6

tetradic

#A63A30 #61A630 #309CA6 #7530A6

square

#A63A30 #61A630 #309CA6 #7530A6

split-complementary

#A63A30 #30A675 #3061A6

monochromatic

#471915 #772922 #A63A30 #CA5449 #D88078

Accessibility & contrast

On white

6.42

#A63A30 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.27

#A63A30 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63A30

6.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63A30	#FFFFFF	#000000	##FFFFFF
##A63A30	1.00	6.42	3.27	6.42
#FFFFFF	6.42	1.00	21.00	1.00
#000000	3.27	21.00	1.00	21.00
##FFFFFF	6.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#58502E

Deuteranopia (green-blind)

#72672D

Tritanopia (blue-blind)

#B61F38

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #a63a30;
/* rgb */ color: rgb(166, 58, 48);
/* oklch */ color: oklch(50.1% 0.144 28.6);

Tailwind

colors: {
  custom: {
    50: '#c87669',
    500: '#a63a30',
    950: '#000000',
  },
}

SCSS

$custom: #a63a30;
$custom-light: #c87669;
$custom-dark: #000000;

JSON

{
  "hex": "#a63a30",
  "rgb": {
    "r": 166,
    "g": 58,
    "b": 48
  },
  "hsl": {
    "h": 5.085,
    "s": 55.14,
    "l": 41.961
  },
  "oklch": {
    "l": 0.50094,
    "c": 0.14436,
    "h": 28.6
  },
  "luminance": 0.11347
}

Semantic roles & 50–950 ramp

primary

#A63A30

secondary

#71BAC0

accent

#D2DE49

background

#FDF7F6

surface

#FAEDEB

border

#D3C8C6

text

#140906

muted

#837B7A

Preview Lab

Preview with #A63A30

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →